| CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
|---|---|---|
| 8.0 | $0-$5k | 0.00 |
Summary
A vulnerability marked as critical has been reported in SSSD. Affected by this issue is some unknown functionality of the component sssctl Command. This manipulation causes command injection. This vulnerability is registered as CVE-2021-3621. Remote exploitation of the attack is possible. No exploit is available. It is suggested to upgrade the affected component.
Details
A vulnerability was found in SSSD. It has been declared as critical. Affected by this vulnerability is an unknown code of the component sssctl Command. The manipulation with an unknown input leads to a command injection vulnerability. The CWE definition for the vulnerability is CWE-77. The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component. As an impact it is known to affect confidentiality, integrity, and availability.
The weakness was published 12/24/2021. The advisory is shared at bugzilla.redhat.com. This vulnerability is known as CVE-2021-3621 since 06/24/2021. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1202 for this issue.
The vulnerability scanner Nessus provides a plugin with the ID 215163 (Debian dla-4047 : libipa-hbac-dev - security update), which helps to determine the existence of the flaw in a target environment.
Upgrading to version 2.6.0 eliminates this vulnerability. The upgrade is hosted for download at sssd.io.
The vulnerability is also documented in the vulnerability database at Tenable (215163). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.
Product
Name
Version
- 0.2.1
- 0.3.0
- 0.3.1
- 0.3.2
- 0.3.3
- 0.4.0
- 0.4.1
- 0.5.0
- 0.6.0
- 0.6.1
- 0.7.0
- 0.7.1
- 0.99.0
- 0.99.1
- 1.0.0
- 1.3.0
- 1.4.0
- 1.4.1
- 1.5.0
- 1.5.1
- 1.5.2
- 1.5.3
- 1.5.4
- 1.5.5
- 1.5.6
- 1.5.6.1
- 1.9.0
- 1.9.1
- 1.9.2
- 1.9.3
- 1.9.4
- 1.16.0
- 1.16.3
- 2.0.0
CPE 2.3
CPE 2.2
CVSSv4
VulDB Vector: 🔍VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 8.1VulDB Meta Temp Score: 8.0
VulDB Base Score: 7.5
VulDB Temp Score: 7.2
VulDB Vector: 🔍
VulDB Reliability: 🔍
NVD Base Score: 8.8
NVD Vector: 🔍
CVSSv2
| AV | AC | Au | C | I | A |
|---|---|---|---|---|---|
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
|---|---|---|---|---|---|
| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
NVD Base Score: 🔍
Exploiting
Class: Command injectionCWE: CWE-77 / CWE-74 / CWE-707
CAPEC: 🔍
ATT&CK: 🔍
Physical: No
Local: No
Remote: Yes
Availability: 🔍
Status: Not defined
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
| 0-Day | Unlock | Unlock | Unlock | Unlock |
|---|---|---|---|---|
| Today | Unlock | Unlock | Unlock | Unlock |
Nessus ID: 215163
Nessus Name: Debian dla-4047 : libipa-hbac-dev - security update
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
0-Day Time: 🔍
Upgrade: SSSD 2.6.0
Timeline
06/24/2021 🔍12/24/2021 🔍
12/24/2021 🔍
11/04/2025 🔍
Sources
Advisory: bugzilla.redhat.comStatus: Confirmed
CVE: CVE-2021-3621 (🔍)
GCVE (CVE): GCVE-0-2021-3621
GCVE (VulDB): GCVE-100-189025
Entry
Created: 12/24/2021 08:12Updated: 11/04/2025 10:37
Changes: 12/24/2021 08:12 (38), 12/27/2021 07:08 (1), 02/09/2025 17:37 (17), 11/04/2025 10:37 (19)
Complete: 🔍
Cache ID: 216::103
Several companies clearly confirm that VulDB is the primary source for best vulnerability data.
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